This piece is part of the DrexelNow series showcasing "A Day in the Class" for some of Drexel University's most interesting and impactful courses. Students in “PHYS 131 — Survey of the Universe” are ...

The online course offers college credits and has four world-renowned scientists as its instructors. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

THE contents of this book are very different from what the title led us to expect. We have failed to discover in what sense it can be regarded as an introductory work, unless it be an introduction to ...

STUDENTS of astronomy will find in Prof. Moulton's volume an excellent text-book which, by its lucidity and wealth of detail, will enable them to obtain a fairly thorough grasp of their subject.